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Looking for a y main/y buffer for a phillips plasma supposed to be part # 999900394043 but can't find that part number. Can anyone help?

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  • Dan  Larson
    Dan Larson May 12, 2010

    what is the model number of the tv? I have some sources I can check with.

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  • Philips Master
  • 14,553 Answers

That does not appear to be a good Philips part number.

Get me the full model number off the back of the set and I will see if I can help you.

SD TECH

Posted on May 12, 2010

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42" Phillips plasma tv is having an issue with the picture. I have read some forums about y and x buffers going out. Does anyone know what this is by looking at it?


from the looks without seeing more I would automatically assume this set had some physical damage, maybe dropped. Just from first looks-- it that a moving images your showing? does the image fluctuate at all. This appears to be a result of physical damage like a bump or some other brute force which allowed air into the unit and I believe it is loosing it "vacuum" pressure inside, in such event it is not something that is repaired, a panel would cost 800+ and the labor would be 100$+ you could buy a new set, if it is not physical damage, I would like more information to trouble shoot the issue--Good Luck.

Jan 29, 2013 | Televison & Video

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Mine has 7 red blinks and wont come on. i pulled off the back and found a fuse blown on left circuit board, i can unplug the left circuit board from main circuit board thats in middle and tv will act like...


No, your done. Now replace the Y-Main, that's the large one you found the fuse blown on and replace the two buffer boards that the Y plugs into. Those are the two at the far left. The part numbers are on the boards. So that's 3 boards you will need. sometimes they sell the buffers together as a pair which is cheaper. DO NOT buy from second hand resellers. Always buy new when it comes to plasma sets.

Nov 30, 2010 | Philips 42PF7320A 42 in. Plasma HDTV

1 Answer

Red lines on plasma screen.


you may want to check out your buffers.

for cheap buffers check out hssparts.com

thank you

Dec 11, 2009 | Philips 42PF7220A 42 in. Plasma Television

1 Answer

Phillips plasma. red horizonal lines running thru picture


Nancy and Guest. This is caused by an overload in the Y main and buffers. If you are electronically inclined and want to fix this yourself its not hard, but it is a little pricey. There are actually two problems manifested here, the sparkles are from the y main and the lines are from the buffers trying to compensate. If you're up for the daunting task of fixing this yourself, http://www.fixya.com/support/t1625867-phillips_42
This should get you started. Don't hesitate to emial directly for further help. Cfoley@hawaii.rr.com

May 07, 2009 | Philips 42PF7320A 42 in. Plasma HDTV

1 Answer

Black screen on 42inch dell lcd tv


your Y-main bd buffer(s) upper and lower. needs replaced. to do this, u need to remove the back cover with a t20 torx bit + phillips screwdriver. once removed, look to the far left, there are 5 or 6 long snap on connections they run along your Y upper and lower buffers. look at them carefully for burn marks around the sealants. if u notice a orange burnt residue, its prob burnt out and needs to be replaced. this should enable the video once again.

Dec 19, 2008 | Dell W4201C 42 in. Plasma HDTV

1 Answer

Phillips 42 inch Plasma -Screen Issues!!!


intermittent loss of picture on either bottom or top half of screen is specific to y buffer boards located on left side of screen going from top to bottom when looking at back of tv. the y lower buffer would be the board to replace to resolve the loss of bottom half of picture. if the top half also is going out intermittently could tied to upper buffer as well but just a note the y main board to right of these buffers drives those two boards so in some cases could also be part of the problem. if only bottom half is affected i would recommend replacing lower buffer only

Aug 07, 2008 | Philips 42PF7320A 42 in. Plasma HDTV

6 Answers

42" magnavox plasma tv


I partly agree with imaliszewski the problem is Y buffers (upper & lower). There is 3 parts to the Y board (Y-main, Y-upper, and Y-lower). There was an issue with defective Y-buffers in a memo sent out by the Plasma manufacture. The problem could be that you just got a set of these defective buffers in your panel. Or as Imaliszewski stated a current problem. but if you replace the Y-buffers repace them as a set. If your TV goes out again after changing the buffers. The panel is causing the problem by drawing too much current. That was a Defect I found out why working in a Philips/Magnavox warranty repair facility.

Jun 11, 2008 | Philips Magnavox 42MF521D/37 Television

4 Answers

Y Upper Board


It looks like GUEST is a little anxoius about your helpful forum here.

Apr 24, 2008 | Samsung HP-R4252 42 in. Plasma HDTV

1 Answer

We have samsung 50 inch plasma tv, we have only half a screen


I have a Phillips 50 inch Plasma. About two months out of warranty the top half of the screen would go black. Sometimes when we tapped on the back behind the upper right hand corner the picture would return. I did some research online and found that there is a Main Y sustain board (much like a mother board in a computer) and connected to that board is a upper Y Buffer board and a Lower Y buffer board. According to my research these boards seem to be the source of the problem. I am assuming that the upper buffer controls the top half of my screen and the lower controls the bottom. I removed the back of my TV (about 50 small screws) and searched for these parts by part number. Surprisingly all of the parts in my Phillips are made by Samsung. I found the parts on ebay at shopjimmy.com. I decided to try replacing the upper Y buffer first. I ordered it from shopjimmy for about 100.00. When I received the part I started to remove my upper Y buffer and realized that the new part was slightly different. The part number was the same but the REV. number was slightly different. The new part was missing a small white connector that connects the upper buffer to the lower buffer. I sent it back for an exchange for the right part with no problem. Ok so here is the interesting piece of this little adventure. When I started to remove my upper Y buffer I removed the screws and started to pull on it to loosen it. When I noticed that I had the wrong part I pushed it back into place and put the screws back . My TV has worked perfectly since I did that, with my original part. It has only been about two months, but if you are in the same situation it might be worth a try.

Nov 19, 2007 | Zenith P42W34P 42 in. EDTV-Ready Plasma...

1 Answer

Phillips 42in plasma lines ocross screen


Are the solid horizontal black lines or colored lines. If colored lines there is a posibility that your Y-main, and upper and lower Y-buffers are bad. If black you have a bad plasma panel.

Oct 08, 2007 | Philips 42PF9630A 42 in. Plasma Television

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